Midori Jane Nishio, M.D.
NPI 1316010366ActiveIndividual· Internal Medicine, Rheumatology· Walnut Creek, CA
Internal Medicine, Rheumatology (M.D.) in Walnut Creek, California, trained at Medical College of Wisconsin (class of 1982). Mostly services rather than prescriptions: Medicare paid $16,658 for 69 patients in 2024, with only 41 Part D claims. Astrazeneca Pharmaceuticals LP was the largest of 5 companies reporting payments in 2025, $414.92 in all, mostly food and beverage.
Overview
| NPI | 1316010366 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 16, 2006 |
| Last updated in NPPES | May 25, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | G50284 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 303 across 18 procedure codes |
| Paid by Medicare | $16,658 |
Part D prescriptions in 2024
| Prescriptions (claims) | 41 · 84 30-day fills |
|---|---|
| Total drug cost | $14,863 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Rheumatology |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Industry payments (Open Payments)
- 2025$414.92 · 6 payments from 5 companies
- 2024$608.17 · 17 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $204.66 | 1 |
| Genzyme Corporation | $139.44 | 2 |
| Fresenius Kabi USA, LLC | $31.46 | 1 |
| Medtronic, Inc. | $20.80 | 1 |
| Glaxosmithkline, LLC. | $18.56 | 1 |
What the 2025 payments were for
- Food and Beverage$414.92 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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